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Soloha48 [4]
3 years ago
15

Determine the value of K that would make this expression a perfect square

Mathematics
1 answer:
Mumz [18]3 years ago
4 0

Answer: k=9/4

Step-by-step explanation: We can do this by finding a number that adds up to 3 when multiplied by 2. The best way to do this is to use ((b^2)/4) which can usually find you the number for a perfect square based on b, which we have. So, 3^2 / 4 =9/4, meaning k=9/4. We can check:

>x^2 +3x +9/4

> (x+3/2)(x+3/2)

Perfect square.

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Solve the system of equations -4x+11=15 and x=2y
bixtya [17]

Answer:

x = -, y = - 1/2

Step-by-step explanation:

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8 0
3 years ago
8x - 2y if x=3, y=5<br> (1) 24<br> (2) 15<br> (3) 14 <br> (4) 10
ladessa [460]

Answer: (4) 14

Step-by-step explanation:

8x - 2y if x is 3 and y is 5

8x = 24

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So 8x - 2y is 14.

5 0
3 years ago
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Malik stops at the grocery store to buy a bag of diapers and 2 cans of formula. He spends a total of $37. The next week he stops
Sedbober [7]

Answer:

Diapers costs $11 and formula is $13.

Step-by-step explanation:

Let's name diapers as A and formula as B.

Simply the equations:

1A + 2B = $37(1)

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Clear D from one equation.

A = $37 - 2B(1)

Replace D into the other equation.

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$74 + B = $87

B = $87 - $74 = $13

Find A, now knowing B.

A = $37 - 2($13)

A = $37 - $26 = $11

8 0
3 years ago
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Which 1 weighs about 6 ounces a toothbrush or a paper clip?
bogdanovich [222]
A toothbrush weighs that much. a paperclip weighs less then an ounce, about 0.049 oz.

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3 years ago
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For each equation choose a value for x and then solve
ss7ja [257]

Answer:

Step-by-step explanation:

For each equation choose a value for x and then solve to find the corresponding y value that makes that equation true.

5 0
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